Avegant's head-mounted virtual retinal display offers brilliant definition using project light to mimic natural vision.
The Eye Tribe Tracker. A $99 eye tracker!
3Doodler is a $75 3D printing pen eagerly awaiting your Kickstarter funding
DNP Beercade The Last Barfighter replaces arcade coin slot with beer tap
Pranav Mistry with SixthSense prototype
Turn Any Surface Into A Touch Interface With “Magic Finger”
Edison the Petit
Tobii REX eye-tracker. $1000
B EarSet 3i